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Secureolive

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WHAT DO I DO?
97 gmc yukon slt, 5.7, 4x4
Bought this truck and the person said the tranny has just been rebuilt and it went downhill fast. Immediately did the following:
-New tranny
-New torque converter
-New rear driveshaft
-New rear end
-New oil/oil filter
After a week, the hub assembly and driver cv axle blew out so I parked it until I could get all the front end parts. Ok so I start it every couple days to keep the juices flowing. It snows, I don't go out for 4-5 days...battery dead. I charge the battery it fires up. I go out a couple days later, battery dead, I jump it, it starts. Auto Zone test says that battery had an overcharged cell so dud. Finally able to do:
-New hub assemblies
-New cv axles
-New tie rods ends (inner and outer)
-New upper and lower ball joints
-Newer battery, reading good
It ran fine, started right up for a week...ran meh ok like it needed a tune up but good. Last week it just wouldn't start without a jump box. It won't crank sometimes, it won't start. It'll crank sometimes, no start. Dugguduggdudgggdug like the starter is out but it's good. There is a starter bypass that was run when I got the truck, I ran the truck with a new starter with and without the bypass...same thing. Duggudugggduggdugguu. I put the jump box on it and it starts up. I hear the fuel pump engage when I turn the key to on position. I have checked all fuses inside and out and have only found one shit fuse, the heater blower fuse...replaced it and heater blew, and every other one read good. I have tried to hook my scanner up to it but it didn't even recognize the truck. With the above list, I have also sunk myself deeper into my beloved shit box with:
-New Air filter
-New starter
-Newer alternator, reading good
-Ground connections show ample voltage, also looking good and have resone connections that looked like shit
-New iginition control module
-New ignition coil
-New spark plugs
-Newer plug wires
If you've read this far, wow...thanks for taking time out of your life for my Canadian born freak show. I'm at a loss for words ha I'm here for any words of advice because obviously I'm willing to throw parts at this toddler for a truck.

UPDATE:
Battery that was newer, (2018), read low volts (so obvious drain there). I checked the cells, two of them were low. I stuck my acessory battery on it (2018, 650cca, small acessory battery) and that started it. It started up, I said oh shit...hopped in and took a test drive, drove to get gas, didn't start at the gas station, I jump it, it starts, I get home, I turn it off, wait maybe 10 seconds...started right up.
 
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Doubeleive

Wes
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the heater fuse is sort of a clue, when the blower motor resistors go bad it can cause a battery drain, although a fuse may blow random for whatever reason I would check out the blower motor resistor usually they are visibly melted or nasty looking. even if it looks ok, maybe do a battery drain test and see if pulling that fuse makes any difference
 

Joseph Garcia

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Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.

I loved my '97 (RIP).
 
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Secureolive

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the heater fuse is sort of a clue, when the blower motor resistors go bad it can cause a battery drain, although a fuse may blow random for whatever reason I would check out the blower motor resistor usually they are visibly melted or nasty looking. even if it looks ok, maybe do a battery drain test and see if pulling that fuse makes any difference
I will try this one. Battery drain. Could the battery read good or ample voltage even if I have a drain in power at start?
 

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